:root {
  --background: #FFFEEF;
  --panel: #ffffff;
  --text: #06204f;
  --muted: rgba(6, 32, 79, 0.66);
  --stroke: rgba(6, 32, 79, 0.09);
  --stroke-soft: rgba(6, 32, 79, 0.05);
  --azul-profertil: #003DA5;
  --azul-gradient: linear-gradient(180deg, #0a46ad, #003da5);
  --verde-profertil: #2D8035;
  --verde-gradient: linear-gradient(180deg, #378f40, #2d8035);
  --accent-color: #003DA5;

  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 18px;

  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--background);
  color: var(--text);
  font-family: "DM Sans", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button { font-family: inherit; }
button:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

.eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.muted {
  color: var(--muted);
  font-size: 0.97rem;
  line-height: 1.45;
}

[hidden] { display: none !important; }

/* ---------- Layout ---------- */
.app {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 22px;
  padding: 22px;
  min-height: 100vh;
  align-items: start;
}

/* ---------- Sidebar ---------- */
.sidebar {
  position: sticky;
  top: 22px;
  background: var(--panel);
  border: 1px solid var(--stroke-soft);
  border-radius: 34px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  min-height: calc(100vh - 44px);
  max-height: calc(100vh - 44px);
  overflow-y: auto;
}

.brand-title {
  font-size: 2rem;
  letter-spacing: -0.04em;
  line-height: 0.96;
  margin: 10px 0 8px;
  font-weight: 700;
}
.brand .muted { margin: 0; }

.categories {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0 -8px;
  padding: 0 8px;
}

.cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 16px;
  border: none;
  background: transparent;
  border-radius: 999px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.cat-item:hover { background: var(--stroke-soft); }
.cat-item.active {
  background: var(--azul-gradient);
  color: #fff;
}
.cat-item .cat-count {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  background: var(--stroke-soft);
  padding: 2px 9px;
  border-radius: 999px;
  transition: all var(--transition-fast);
}
.cat-item.active .cat-count {
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
}

.export-all {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  border: none;
  border-radius: 999px;
  background: var(--verde-gradient);
  color: #fff;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}
.export-all svg { width: 18px; height: 18px; }
.export-all:hover { filter: brightness(1.05); transform: translateY(-1px); }
.export-all:active { transform: translateY(0); }

/* ---------- Main ---------- */
.main { min-width: 0; padding-bottom: 56px; }

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  background: var(--panel);
  border: 1px solid var(--stroke-soft);
  border-radius: var(--radius-xl);
  padding: 16px 18px;
  margin-bottom: 22px;
}
.toolbar-info { display: flex; align-items: center; gap: 12px; }
.toolbar-format { display: flex; align-items: center; gap: 12px; }
.format-label { font-size: 0.82rem; font-weight: 500; color: var(--muted); white-space: nowrap; }
.count-chip {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--background);
  border: 1px solid var(--stroke);
  padding: 4px 12px;
  border-radius: 999px;
}

.pill-group {
  display: inline-flex;
  gap: 6px;
  background: var(--background);
  border: 1px solid var(--stroke);
  border-radius: 999px;
  padding: 4px;
}
.pill {
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.pill:hover { color: var(--text); transform: translateY(-1px); }
.pill.active {
  background: var(--azul-gradient);
  color: #fff;
  transform: none;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--stroke-soft);
  border-radius: var(--radius-xl);
  padding: 22px;
}

.tip {
  margin: 18px 6px 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--stroke-soft);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), border-color var(--transition-base);
  /* backwards y no forwards: con forwards la animación pisa el transform del hover */
  animation: itemSlideUp 0.5s var(--ease-out) backwards;
}
.card:hover { border-color: rgba(6, 32, 79, 0.18); }

@keyframes itemSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Tarjeta de color ---------- */
.color-card { padding: 10px; gap: 8px; }

.swatch {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border: none;
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  gap: 2px;
  text-align: left;
  cursor: pointer;
  color: #fff;
  transition: transform var(--transition-base);
}
.swatch.is-light { color: var(--text); }
.swatch.has-edge { box-shadow: inset 0 0 0 1px var(--stroke); }
.swatch:hover { transform: scale(0.985); }
.swatch:active { transform: scale(0.97); }
.swatch-role {
  position: absolute;
  top: 14px;
  left: 16px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.78;
}
.swatch-name {
  font-family: "Familjen Grotesk", "DM Sans", sans-serif;
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
}
.swatch-code {
  font-size: 0.86rem;
  font-weight: 500;
  opacity: 0.86;
  font-variant-numeric: tabular-nums;
}
.swatch-copy {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.swatch.is-light .swatch-copy { background: rgba(6, 32, 79, 0.08); }
.swatch:hover .swatch-copy, .swatch:focus-visible .swatch-copy { opacity: 1; transform: none; }
.swatch-copy svg { width: 15px; height: 15px; }

.color-note {
  margin: 4px 8px 0;
  font-size: 0.82rem;
  line-height: 1.35;
  color: var(--muted);
  min-height: 2.7em;
}

.codes { display: flex; flex-direction: column; gap: 2px; }
.code-row {
  position: relative;
  display: grid;
  grid-template-columns: 70px 1fr;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 9px 10px;
  border: none;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  font-size: 0.88rem;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.code-row:hover { background: var(--background); }
.code-row.is-active { background: var(--background); }
.code-k {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.code-v { font-weight: 500; font-variant-numeric: tabular-nums; white-space: nowrap; }
.code-ic {
  position: absolute;
  right: 8px;
  top: 50%;
  width: 20px;
  height: 20px;
  padding: 2px;
  margin-top: -10px;
  border-radius: 6px;
  background-color: inherit;
  color: var(--muted);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.code-row:hover .code-ic, .code-row.is-copied .code-ic { opacity: 1; }
.code-row.is-copied .code-ic { color: var(--verde-profertil); }
.code-row.is-copied { background: rgba(45, 128, 53, 0.09); }

/* ---------- Combinaciones ---------- */
.stage-head {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.stage-rule {
  flex: 1;
  min-width: 240px;
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.45;
}

.combo-chips { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.combo-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px 7px 7px;
  border: 1px solid var(--stroke);
  border-radius: 999px;
  background: var(--background);
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
  animation: itemSlideUp 0.45s var(--ease-out) backwards;
}
.combo-chip:hover { transform: translateY(-1px); color: var(--text); }
.combo-chip.active {
  border-color: var(--text);
  background: var(--panel);
  color: var(--text);
}
.chip-pie {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border-radius: 999px;
}

/* La torta de proporciones, como en el manual (sección 03.06.01) */
.stage {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  align-items: center;
  gap: 34px;
  padding: 30px;
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--stroke);
  transition: background-color 0.5s ease;
}
.stage.on-marfil { background: var(--background); }

.pie-box {
  position: relative;
  width: 100%;
  max-width: 340px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
}
/* El SVG llena la caja y la torta se dibuja lo más grande que entre, centrada. */
.pie {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.pie-group {
  transform-origin: 100px 100px;
  transform: rotate(var(--rot, -90deg));
  transition: transform 0.9s var(--ease-out);
}
.slice {
  fill: none;
  stroke-width: 100;
  stroke-dasharray: 0 100;
  pointer-events: stroke;
  cursor: pointer;
  transition:
    stroke-dasharray 0.9s var(--ease-out),
    stroke-dashoffset 0.9s var(--ease-out),
    stroke 0.55s ease,
    filter var(--transition-fast);
}
.slice:hover { filter: brightness(1.07); }
.pie-base {
  stroke: none;
  pointer-events: none;
  transition: fill 0.55s ease, opacity 0.35s ease 0.5s;
}

.legend {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}
.legend-item {
  display: grid;
  grid-template-columns: 44px auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 12px 18px 12px 12px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius-md);
  background: var(--background);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background-color 0.5s ease;
  animation: itemSlideUp 0.45s var(--ease-out) backwards;
}
.stage.on-marfil .legend-item { background: var(--panel); }
.legend-item:hover { transform: translateY(-1px); border-color: rgba(6, 32, 79, 0.18); }
.legend-item.is-copied { border-color: var(--verde-profertil); }
.legend-dot { width: 44px; height: 44px; border-radius: 14px; }
.legend-dot.has-edge { box-shadow: inset 0 0 0 1px var(--stroke); }
.legend-pct {
  min-width: 3.3ch;
  font-family: "Familjen Grotesk", "DM Sans", sans-serif;
  font-size: 2.1rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.legend-text { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.legend-text small {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.legend-text strong { font-size: 0.98rem; font-weight: 600; }
.legend-code {
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.stage-foot {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.switch {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 4px 6px 4px 4px;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 999px;
}
.switch-track {
  position: relative;
  width: 44px;
  height: 26px;
  border-radius: 999px;
  background: rgba(6, 32, 79, 0.16);
  transition: background var(--transition-base);
}
.switch-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: #fff;
  transition: transform 0.35s var(--ease-out);
}
.switch[aria-checked="true"] .switch-track { background: var(--verde-profertil); }
.switch[aria-checked="true"] .switch-knob { transform: translateX(18px); }

.btn {
  padding: 14px;
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}
.btn:hover { transform: translateY(-1px); }
.btn-ghost { background: var(--background); border: 1px solid var(--stroke); color: var(--text); }
.btn-inline { padding: 12px 20px; }

/* ---------- Color y texto ---------- */
.grid-text { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.text-card {
  padding: 10px 10px 12px;
  gap: 10px;
  cursor: pointer;
  text-align: left;
  color: var(--text);
  font: inherit;
}
.text-card:hover { transform: translateY(-2px); }
.text-card.is-copied { border-color: var(--verde-profertil); }
.text-tile {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-family: "Familjen Grotesk", "DM Sans", sans-serif;
  font-size: 3.4rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}
.text-tile.has-edge { box-shadow: inset 0 0 0 1px var(--stroke); }
.text-caption { display: flex; flex-direction: column; gap: 1px; padding: 0 6px; }
.text-caption strong { font-size: 0.86rem; font-weight: 600; }
.text-caption small { font-size: 0.78rem; color: var(--muted); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 80;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: calc(100vw - 32px);
  padding: 11px 18px 11px 12px;
  border-radius: 999px;
  background: var(--text);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transform: translate(-50%, 0);
  animation: toastIn 0.4s var(--ease-out);
}
.toast.is-leaving { animation: toastOut 0.25s ease forwards; }
.toast-dot {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.5);
}
@keyframes toastIn {
  from { opacity: 0; transform: translate(-50%, 16px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translate(-50%, 8px); }
}

/* ---------- Bong credit (idéntico al Pattern Generator) ---------- */
.bong-credit {
  position: fixed;
  right: 20px;
  bottom: 18px;
  z-index: 50;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(6, 32, 79, 0.06);
  color: #004831;
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  backdrop-filter: blur(6px);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}
.bong-credit svg {
  width: 18px;
  height: auto;
  display: block;
  fill: currentColor;
}
.bong-credit:hover { transform: translateY(-1px); border-color: rgba(6, 32, 79, 0.18); }

/* ---------- Paleta a pantalla completa ---------- */
/* En escritorio las tarjetas ocupan todo el alto disponible y lo que crece es
   el campo de color; los códigos quedan abajo. */
@media (min-width: 861px) {
  .main {
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 44px);
  }
  #view-paleta {
    flex: 1;
    display: flex;
    flex-direction: column;
  }
  #paletteGrid {
    flex: 1;
    grid-auto-rows: 1fr;
  }
  /* Siempre filas parejas: 8 en una fila, 4 + 4 o 2 por fila, según el ancho. */
  .main { container-type: inline-size; }
  @container (max-width: 859px) {
    #paletteGrid { grid-template-columns: repeat(2, 1fr); }
  }
  @container (min-width: 860px) {
    #paletteGrid { grid-template-columns: repeat(4, 1fr); }
  }
  /* Con cuatro tarjetas justas, los códigos van un poco más compactos */
  @container (min-width: 860px) and (max-width: 1040px) {
    .code-row { grid-template-columns: 56px 1fr; padding: 9px 8px; }
    .code-v { font-size: 0.85rem; }
  }
  @container (min-width: 1760px) {
    #paletteGrid { grid-template-columns: repeat(8, 1fr); }
    .code-row { grid-template-columns: 60px 1fr; }
    .color-note { min-height: 4.05em; }
  }

  /* Combinaciones: el panel ocupa todo el alto y la torta crece con él. */
  #view-combos {
    flex: 1;
    display: flex;
    flex-direction: column;
  }
  #view-combos .panel {
    flex: 1;
    display: flex;
    flex-direction: column;
  }
  .stage {
    flex: 1;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 1fr);
    padding: 26px;
  }
  .legend { max-width: 540px; }
  .pie-box {
    align-self: stretch;
    max-width: none;
    aspect-ratio: auto;
    min-height: 260px;
  }
  .color-card .swatch {
    flex: 1;
    aspect-ratio: auto;
    min-height: 150px;
  }
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--verde-profertil); border-radius: 999px; border: 2px solid var(--background); }
.sidebar::-webkit-scrollbar { width: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; padding: 16px; gap: 16px; }
  .sidebar {
    position: static;
    min-height: 0;
    max-height: none;
    border-radius: var(--radius-xl);
    padding: 22px;
  }
  .categories {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .cat-item { flex: 0 0 auto; }
  .export-all { margin-top: 8px; }
  .toolbar { margin-bottom: 16px; }
  .main { padding-bottom: 72px; }
}
@media (max-width: 1080px) {
  .stage { grid-template-columns: minmax(0, 260px) minmax(0, 1fr); gap: 22px; padding: 22px; }
}
@media (max-width: 620px) {
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-format { justify-content: space-between; }
  .pill { padding: 8px 11px; }
  .toolbar-format .pill-group { flex: 1; justify-content: space-between; }
  .panel { padding: 14px; }
  .stage-head { flex-direction: column; align-items: stretch; gap: 12px; }
  .stage-head .pill-group { justify-content: space-between; }
  .stage-rule { min-width: 0; }
  /* En celular la torta va arriba y la lista abajo */
  .stage { grid-template-columns: 1fr; gap: 20px; padding: 20px 14px 14px; }
  .pie-box { max-width: 240px; }
  .legend-item { grid-template-columns: 38px auto minmax(0, 1fr); gap: 10px; padding: 10px 12px 10px 10px; }
  .legend-dot { width: 38px; height: 38px; border-radius: 12px; }
  .legend-pct { font-size: 1.7rem; }
  .legend-code { grid-column: 2 / -1; margin-top: -4px; }
  .stage-foot { flex-direction: column; align-items: stretch; }
  /* Paleta a una columna: en dos, los códigos largos no entran */
  .grid { grid-template-columns: 1fr; gap: 12px; }
  .swatch { aspect-ratio: 16 / 8; }
  .color-note { min-height: 0; }
  .grid-text { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .text-tile { font-size: 2.4rem; }
  .bong-credit { right: 12px; bottom: 12px; }
  .toast { bottom: 62px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.01ms !important;
  }
}